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valentinak56 [21]
3 years ago
14

Please answer this question, ONLY IF YOU KNOW THE ANSWER. No guessing, 20 points and brainliest!

Mathematics
1 answer:
Karo-lina-s [1.5K]3 years ago
8 0
C. if the able is 1/2 then it would mean the gas to be an even amount of each color. say the is 3 red ants 3 black and want to know the probability of drawing a black Male on the first draw . then you would count the marbles which is 3 over the total of 6 and when simplified it is 1/2
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The number of typing errors made by a typist has a Poisson distribution with an average of two errors per page. If more than two
wlad13 [49]

Answer: 0.6767

Step-by-step explanation:

Given : Mean =\lambda=2 errors  per page

Let X be the number of errors in a particular page.

The formula to calculate the Poisson distribution is given by :_

P(X=x)=\dfrac{e^{-\lambda}\lambda^x}{x!}

Now, the probability that a randomly selected page does not need to be retyped is given by :-

P(X\leq2)=P(0)+P(1)+P(2)\\\\=(\dfrac{e^{-2}2^0}{0!}+\dfrac{e^{-2}2^1}{1!}+\dfrac{e^{-2}2^2}{2!})\\\\=0.135335283237+0.270670566473+0.270670566473\\\\=0.676676416183\approx0.6767

Hence, the required probability :- 0.6767

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